View Compilation Error

224437_0_20700.c:10: error: syntax error before "point"
224437_0_20700.c: In function `operate':
224437_0_20700.c:14: error: `e' undeclared (first use in this function)
224437_0_20700.c:14: error: (Each undeclared identifier is reported only once
224437_0_20700.c:14: error: for each function it appears in.)
224437_0_20700.c:14: error: `s' undeclared (first use in this function)
224437_0_20700.c:16: error: `P' undeclared (first use in this function)
224437_0_20700.c:36: error: 'for' loop initial declaration used outside C99 mode
224437_0_20700.c:37: error: 'for' loop initial declaration used outside C99 mode
224437_0_20700.c: In function `main':
224437_0_20700.c:54: error: `point' undeclared (first use in this function)
224437_0_20700.c:54: error: syntax error before "P"
224437_0_20700.c:58: error: `P' undeclared (first use in this function)